CN202615566U

CN202615566U - Vehicle-mounted automatic alarm system

Info

Publication number: CN202615566U
Application number: CN2012202732710U
Authority: CN
Inventors: 郁志纯; 郑维明
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-06-11
Filing date: 2012-06-11
Publication date: 2012-12-19
Anticipated expiration: 2022-06-11

Abstract

The utility model discloses a vehicle-mounted automatic alarm system, which consists of a crash sensor (3) and a positioning alarm system (4). The vehicle-mounted automatic alarm system is characterized in that the crash sensor (3) is made by packing a metal ball (32) in a metal shell (31), and the packed metal ball (32) is fixed by two light springs (33) arranged in the vertical direction; the metal shell (31) and the metal ball (32) are connected into a circuit to form two contacts of a circuit switch; the positioning alarm system (4) consists of a single-chip microcomputer (1) and an emergency information transmitting module (2); the emergency information transmitting module (2) consists of a short message module (21), a manual button (22) and a GPS (global positioning system) module (23); and 360-degree crash sensitivity can be realized by the crash sensor (3). Meanwhile, since a dual alarm system with a user-controlled button and an automatic delay alarm is adopted, accurate reflection can be realized in any emergency case, and the problems of missing alarm and error alarm can be solved.

Description

Vehicle-mounted automatic alarm system

Technical field

The utility model relates to a kind of vehicle-mounted automatic alarm system, sends the warning rescue signal to the external world when being used in vehicle is in collision back crisis car passenger safety.

Background technology

Through market study; At present in the world only European Union have vehicle-mounted automatic alarm system within the border, be mainly used at automobile get into an accident, air bag eject after placement of emergency calls automatically immediately, the particular location of traffic accident is accurately judged by first-aid centre according to the global position system of loading in the car that meets accident; And send breakdown gang rapidly; But because this warning system is comparatively expensive, have only at present to be equipped with this system on the minority car, again since the signal acquisition method that abroad uses as air bag eject signal, the transmission signal is placement of emergency calls; Under the situation that some air bags can not eject or passengers inside the car can't call, this warning system has just lost effect.

The utility model content

In order to solve not comprehensive, the problem automatically of reporting to the police of above-mentioned signals collecting, the utility model provides a kind of vehicle-mounted automatic alarm system, and it adopts a kind of novel impact microphone and positioning alarm system, can accurately react to all kinds of emergency case.The technical scheme of the utility model is: comprise by impact microphone, positioning alarm system and form; Described impact microphone is made by package metals ball in the metal shell, and the metal shell inner wall shape is cylindrical, and two light springs were fixed about metal ball of encapsulation adopted in it; In metal shell and the metal ball place in circuit and two contacts of formation contactor, if both contacts, then circuit is connected.

Ball when car speed changes is because inertia motion produces displacement.If automobile is clashed, it is contacting metal shell inwall that the ball moving displacement reaches setting value, and ball and metal shell are as in the conductor place in circuit, and circuit was connected when both contacted, thereby sent the impact pulse signal.

Described positioning alarm system comprises by single-chip microcomputer, calling for help information sending module and forms; Described calling for help information sending module includes SMS module, hand push button and GPS module and forms; Impact microphone sends pulse signal during car crass; Convert high-frequency current signal into via d type flip flop and get into single-chip microcomputer; Single-chip microcomputer is carried out the programmed acquisition GPS module longitude and latitude data that woven; By SMS module send have data such as time, place trouble-signal to the note receiver of 120 first-aid centres or 110, wait for rescue.

After sensor sent signal, single-chip microcomputer received interrupt request, and red light LED is bright; The user confirms through pressing alarm button or cancellation alarm button are selected whether to report to the police, and do not do and select to report to the police automatically after 15 seconds, and warning red light LED does not stop flicker; Single-chip microcomputer sends instruction to GPS, and GPS sends to single-chip microcomputer with current institute allocation after accepting instruction; Send to SMS module after the data processing of single-chip microcomputer with acceptance, outwards send an SOS through SMS module.

The utility model adopts the beneficial effect of above technical scheme to be: described impact microphone can reach 360 ° of impact sensitivities; Can know through analytical calculation, send pulse signal during automobile generation sharp impacts, and suddenly when cruising quicken, under the anxious deceleration situation ball because the displacement that inertia motion produces is very little; Be far smaller than setting value; Ball can't contact with metal shell, and circuit is in off-state, does not send pulse; Thereby avoid reporting by mistake; Owing to adopted the button and the dual warning system of delaying time and reporting to the police automatically of user's control, make the utility model in emergency circumstances can both accomplish accurate reflection, thereby eliminated the problem of failing to report wrong report simultaneously any.

Description of drawings

Fig. 1 is the structural representation of the impact microphone of the utility model.

Fig. 2 is the module diagram of the positioning alarm system of the utility model.

Fig. 3 is the circuit diagram of the utility model positioning alarm system, and wherein, SB0 is an impact microphone, and SB1 skips wait for confirming alarm button.SB2 prevents wrong report for the cancellation alarm button.

Among the figure, 1 single-chip microcomputer, 2 call for help information sending module, 21 SMS modules, 22 hand push buttons, 23GPS module, 3 impact microphones, 4 positioning alarm systems, 31 metal shells, 32 metal ball, 33 light springs.

Embodiment

The utility model comprises by impact microphone 3, positioning alarm system 4 and forms.

One, impact microphone:

As shown in Figure 1; It is made by package metals ball 32 in the metal shell 31; Metal shell 31 inner wall shape are cylindrical, and two light springs 33 were fixing about its interior metal ball that encapsulates 32 adopted, in metal shell 31 and metal ball 32 places in circuit and two contacts of formation contactor; If both contacts, then circuit is connected.

Moment can produce very big acceleration when automobile bumped.According to national automobile C-NCAP experimental standard, think that car speed is that the following accident of 50km/h (13.8m/s) is artificial accident, do not belong to the row of unknown accident, that is to say that car speed is that the above collision accident that takes place of 50km/h is unknown accident.When therefore under the condition of this Sensor Design vehicle into account speed more than 50km/h sharp impacts taking place, sensor must send alerting signal, and under normal acceleration and deceleration condition, does not send alerting signal.According to the principle of work of sensor, must guarantee car speed under the condition that bumps more than the 50km/h, ball contacts with the metal shell inwall.Therefore the distance between ball and the metal shell is a significant data of design.And the relating to parameters such as rigidity of the quality of the moving displacement of ball and ball, spring.

The raw data of this Sensor Design derives from national automobile C-NCAP test condition:

1. positive 100% overlapping rigid collision test: vehicle 100% overlapping frontal impact is the rigidity obstacle fixedly.Impact velocity is 50km/h～51km/h.

2. car speed 56km/h is to the front offset collision of deformable barrier 40% Duplication.

3. test fixedly deformable energy-absorbing obstacle of vehicle 40% overlapping frontal impact.Impact velocity is 56Km/h-57Km/h (test speed must not be lower than 56km/h), and offset collision vehicle and deformable obstacle collide overlapping width should be in the scope of 40% overall width ± 20mm.

Satisfying under the above working condition,, therefrom finding out one group of optimum data as sensor each several part design size through the relation between the parameters such as emulation experiment and computational analysis ball quality, displacement of ball, spring rate, spring original length, spring installation length.

1) confirm the relation of displacement of ball and ball quality:

The chamber experimental analysis of utilization physical simulation experiment, it is as shown in table 1 to obtain parameter.

Annotate: M ball/kg (metal ball quality) L bullet/mm (drift of spring) L peace/mm (installation length of spring) K/ (N/m) (the K value of spring) S displacement mm (displacement of metal ball)

Get by above-mentioned experimental result, at the L bullet., L peace., K. one regularly, the displacement of ball reduces and reduces with quality.According to the requirement of sensor overall dimension, when being 0.001Kg, the ball quality more meets the requirements.

2) confirm the pretension of displacement of ball and spring, the relation between the rigidity:

Experimental result by table 2 draws, at the M ball, and L peace .K. one timing, the displacement size of ball reduces with the increase of spring pretension.Can know the every minimizing of spring free length 1mm, the corresponding minimizing of displacement of ball 1mm through analyzing.Experimental result by table 3 draws, in M ball, L bullet, L peace. and one regularly, and the displacement of ball reduces with the increase of the K value of spring.

Consider the influence of K value, and satisfy spring pretension 10 times, under the constant situation of other conditions greater than ball gravity; When getting the K value for 900N/m; Observe the drift of spring and the relation between the displacement, by the aggregation of data analysis of table 4, contrast draws this and organizes the 2nd association and meet the requirements.It is that 0.001kg, spring installation length are that 20mm, drift are 18mm in the ball quality when speed surpasses the 56km/h side impact that experience confirms, therefore the displacement of ball motion can tentatively confirm the sensor construction size greater than 20mm when the K value was 900N/m:

1. metal ball quality m=0.001kg, density is ρ=7.85kg/ cubic centimetre, the radius that calculates metal ball thus is 5mm

2. upper spring: installation length: L peace=20mm drift: L=18mm elasticity coefficient: K=900N/m

3. lower spring: installation length: L peace=20mm drift: L=18mm elasticity coefficient: K=900N/m

4. ball motion setting displacement is 20mm, and metal shell inner chamber radius is 25mm (the ball moving displacement adds the radius of a ball), the high 46mm of inner chamber (upper and lower spring free length adds the metal ball diameter).

This Design of Sensor can satisfy the warning requirement of the type car collision accident of being tested under the national car gage impact test condition; Promptly when this accident takes place; Sensor can send electric signal accurately and give the next stage components and parts, and sensor can not trigger when anxious acceleration of cruising and brake.

Two, positioning alarm system:

Like Fig. 2, shown in 3, it is made up of single-chip microcomputer 1, calling for help information sending module 2; Described calling for help information sending module 2 includes SMS module 21, hand push button 22 and GPS module 23 and forms; Impact microphone 3 sends pulse signal during car crass; Convert high-frequency current signal into via d type flip flop and get into single-chip microcomputer 1; Single-chip microcomputer 1 is carried out the programmed acquisition GPS module 23 longitude and latitude data that woven; By SMS module 21 send have data such as time, place trouble-signal to the note receiver of 120 first-aid centres or 110, wait for rescue.After sensor sent signal, single-chip microcomputer 1 received interrupt request, and red light LED is bright; Whether the user selects to report to the police through hand push button SB1 and SB2, does not do and selects to report to the police automatically after 15 seconds, and warning red light LED does not stop flicker; Single-chip microcomputer 1 sends instruction to GPS, and GPS sends to single-chip microcomputer 1 with current institute allocation after accepting instruction; Send to SMS module 21 after the data processing of single-chip microcomputer 1 with acceptance, outwards send an SOS through SMS module 21.

Above-mentioned embodiment is exemplary, is to be the restriction that this patent is comprised scope in order better to make those skilled in the art can understand this patent, can not to be interpreted as; So long as the technology contents essence of being made according to the disclosed technical scheme of this patent is identical or any change or the modification that are equal to, all fall into the scope that this patent comprises.

The subordinate list explanation:

The relation of the displacement of table 1 ball and ball quality, ball initial velocity V=13.8m/s

	M ball/kg	L bullet/mm	L peace/mm	K/(N/m)	S displacement mm
						1	0.006	20	20	900	40
2	0.005	20	20	900	38
						3	0.004	20	20	900	38
4	0.003	20	20	900	32
						5	0.002	20	20	900	28
6	0.001	20	20	900	22

The relation of the displacement of table 2 ball and spring pretension, ball initial velocity V=13.8m/s

	M ball/kg	L bullet/mm	L peace/mm	K/(N/m)	S displacement mm
						1	0.001	20	20	1200	20
2	0.001	19	20	1200	19
						3	0.001	18	20	1200	18
4	0.001	17	20	1200	17
						5	0.001	16	20	1200	16

The displacement of table 3 ball and spring K value concern ball initial velocity V=13.8m/s

	M ball/kg	L bullet/mm	L peace/mm	?K/(N/m)	S displacement mm
						1	0.001	20	20	500	27
2	0.001	20	20	700	24
						3	0.001	20	20	900	22
4	0.001	20	20	1100	21

5

0.001

20

1300

20

The drift of table 4 spring and the relation between the displacement

	M ball/kg	L bullet/mm	L peace/mm	K/(N/m)	S displacement mm
						1	0.001	19	20	900	21
2	0.001	18	20	900	20
						3	0.001	17	20	900	19
4	0.001	16	20	900	18
						5	0.001	15	20	900	17

Claims

1. a vehicle-mounted automatic alarm system comprises by impact microphone (3), positioning alarm system (4) and forms; It is characterized in that: described impact microphone (3) is made by the interior package metals ball of metal shell (31) (32), and two light springs (33) were fixing about metal ball (32) of encapsulation adopted in it; In metal shell (31) and metal ball (32) place in circuit and two contacts of formation contactor; Described positioning alarm system (4) comprises by single-chip microcomputer (1), calling for help information sending module (2) and forms; Described calling for help information sending module (2) includes SMS module (21), hand push button (22) and GPS module and forms (23).

2. vehicle-mounted automatic alarm system as claimed in claim 1 is characterized in that: described metal shell (31) inner wall shape is cylindrical.

3. vehicle-mounted automatic alarm system as claimed in claim 1 is characterized in that: described hand push button (22) has the alarm button of affirmation and two kinds of cancellation alarm buttons.